13022223444 has 96 divisors (see below), whose sum is σ = 36365844480. Its totient is φ = 4018053600.

The previous prime is 13022223433. The next prime is 13022223457. The reversal of 13022223444 is 44432222031.

It is a super-2 number, since 2×13022223444² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7552 + ... + 161559.

It is an arithmetic number, because the mean of its divisors is an integer number (378810880).

Almost surely, 2^13022223444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13022223444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18182922240).

13022223444 is an abundant number, since it is smaller than the sum of its proper divisors (23343621036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13022223444 is a wasteful number, since it uses less digits than its factorization.

13022223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169178 (or 169170 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 13022223444 its reverse (44432222031), we get a palindrome (57454445475).

The spelling of 13022223444 in words is "thirteen billion, twenty-two million, two hundred twenty-three thousand, four hundred forty-four".